Journal Article
Climatically controlled reproduction drives interannual growth variability in a temperate tree species
Andrew J. Hacket‐Pain; Davide Ascoli; Giorgio Vacchiano; Franco Biondi; Liam Cavin; Marco Conedera; Igor Drobyshev; Isabel Dorado Liñán; Andrew D. Friend; Michael Grabner; Claudia Hartl; Juergen Kreyling; François Lebourgeois; Tom Levanič; Annette Menzel; Ernst van der Maaten; Marieke van der Maaten‐Theunissen; Lena Muffler; Renzo Motta; Catalin‐Constantin Roibu; Ionel Popa; Tobias Scharnweber; Robert Weigel; Martin Wilmking; Christian S. Zang
Ecology Letters · Vol. 21, Issue 12 · pp. 1833-1844 · 2018
Abstract
Climatically controlled allocation to reproduction is a key mechanism by which climate influences tree growth and may explain lagged correlations between climate and growth. We used continent‐wide datasets of tree‐ring chronologies and annual reproductive effort in Fagus sylvatica from 1901 to 2015 to characterise relationships between climate, reproduction and growth. Results highlight that variable allocation to reproduction is a key factor for growth in this species, and that high reproductive effort (‘mast years’) is associated with stem growth reduction. Additionally, high reproductive effort is associated with previous summer temperature, creating lagged climate effects on growth. Consequently, understanding growth variability in forest ecosystems requires the incorporation of reproduction, which can be highly variable. Our results suggest that future response of growth dynamics to climate change in this species will be strongly influenced by the response of reproduction.